One of my friends has a D3100 and likes it quite well. The $399 deal is pretty good. About half of my gear is refurbished and everything looked and worked like new, and all is still working flawlessly to this day.

The 55-200VR is not a bad lens for the money. It was one of the first tele lenses I ever owned, and it does a decent job for the money. Focus is a little on the slow side, and it has a plastic lens mount if I remember correctly, but it will do a nice job for most shooting situations. Cameta has refurbs for $134 and free shipping...if you are on a budget, I don't think you will do much better with any other lens (or any other store).
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K.B.